Injector



(ModeL) 2 Sheets-Sheet 1.

P. P. HOGUE.

INJECTOR. No. 527,493. Pat ented Oct. 16, 1894.

Q 0 g H g I 2 Sheets-Sheet 2. P. P. HOGUE. INJECTOR.

(ModeL) No. 527,493. Patented Oct. '16, 1894.

'Z(/ Sea. I var-c 02" 'forzpey bining tube, whereby the combining tubeand the delivery tube may be removed together V NITED STATES PATENTOFFICE.

PARKER PILLSBURY HOGUE, OF CINCINNATI, OHIO, ASSIGNOR TO THE AUTOMATICINJECTOR COMPANY, OF OHIO.

INJECTOR.

SPECIFICATION forming part of LettersiiP atent No. 527,493, datedOctober 16, 1894.

Application filed April 24, 1894. Serial No. 508,833- (ModeL) To allwhom, it may concern.-

Be it known thatI, PARKER PILLSBURY HOGUE, a citizen of the UnitedStates, residing at Cincinnati, in the county of Hamilton 5 and State ofOhio, have invented certain new and useful Improvements in Injectors;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in feed water injectors for steamboilers; and ithas for its general object to provide an injectorembodying a removable end-piece or bushing carrying a removable deliverytube and detachably connected to a removable comfrom theshell or casingof the injector by simply removing the end-piece or bushing and may thenbe readily and separately disconnected from said end-piece or bushingfor repairs or to give place to new parts.

With the foregoing ends in view the invention will be fully understoodfrom the following description and claims when taken in connection withthe accompanying drawings, in which-- Figure 1, is a longitudinalsection of an injector embodying my invention, and Fig. 2, is a detailperspective view illustrating the end piece or bushing, the deliverytube and the combining tube as theyappear when removed together from theshell or casing of the injector. I a i The injector A,illustrated in thesaid drawings is similar in general principle and construction to thatdisclosed in my Letters Patout No. 501,422 of July 11, 1893, and it isprovided at the feed end of its shell or casing with interior andexterior threads or, b, and is i also provided with apertured partitionwalls to, c, in which is mounted the removable combining tube B. Thiscombining tube B, is provided adjacent to its inner end with a shoulder(1, designed to limit its inward movement, and it is also provided withthe for wardly extended cylindrical portion C, which a has ports as e,communicatingwith one of the chambers ofthe shell or casing, andinterior threads j, which latter are designed for the engagement of theend piece or bushing D whereby it will beseen that the end piece orbushing may be directly connected to the combining tube, that is to saywithout the connection of another part between them. The said bushing orend piece D, is provided with a squared portion g, designed to aiford anengagement for a wrsnch, and with the flange h, designed to abut againstthe feed end of the'injector casing, and it has the reduced and threadedportion i, designed to engage the threads at, of said casing, and thefurther reduced and threaded portion j, which is designed to engage thethreads in the portion C, ofthe combining tube so as to effect adetachable connection between the end piece or bushing andthe tube. Thenut or bushing D,isfurthermore provided with a threaded bore as k, forthe reception of the exteriorly threaded delivery tube E, which restsadjacent to the discharge end of the combining tube and has an angularshoulder or head as Z, designed to bear against the inner end of the nutor bushing and also designed to afford a hold for a wrench. Thisdelivery tube E, on account of the velocity of the water passingthroughit, is more likely to wear than any other part of the injector,and I therefore contemplate making it of hard metal in order to prolongits usefulness. This maybe done without materially increasing the costof the injector as my improved delivery tube, on account of its smallsize, embodies but a small amount of metal; and when desired an engineercan conveniently carry one or more of the delivery tubes in his pocketso that he can readily replace the tube in the injector bears againstthe flange h, of the end piece or bushing D, so as to make a tightjoint.

and prevent said end piece or bushing from working loose.

It will :be understood from the foregoing that the combining tube issimply mounted in and not connected to the partition walls of theinjector, and it will therefore be seen that when the line check or pipeis disconnected, the combining tube may be removed with the end piece orbushing by simply applying a wrench to the portion g, of the latter andturning the same outwardly. When the directly connected piece or bushingand the combining tube are removed from the shell or casing, thecombining tube alone may be disconnected from the end piece or bushingand a new combining tube placed in position without disturbing any ofthe other parts. When the combining tube has been disconnected from theend piece, the delivery tube which embodies but a minimum amount ofmetal and is not connected to the combining tube, may be readilydisconnected from the end piece or bushing and a new do livery tube maybe placed in position if necessary.

The removal of the connected parts from the shell or casing and theirafter disconnection as well as the connection of a new part whennecessary, may be effected without the aid of any implement other than acommon wrench, and it will therefore be appreciated that an engineer canrepair the injector when it fails to work without loss of time, which isa desideratum.

By reason of my improvements the injector can be quickly and easilyrepaired by the engineer at but a slight cost and the usefulness of theinjector as a whole prolonged for an indefinite period of time, which isthe desid- ,eratum in this class of devices.

While I prefer to arrange the delivery tube E, with its head 1, bearingagainst the inner end of the end piece or bushing as before described, Ido not desire to be understood as confining myself to such dispositionof the tube as in some cases it may be arranged with its head 1, bearingagainst the outer end of the end piece or bushing so as to admit of itsbeing removed without disconnecting the end piece or bushing from thecombining tube.

I have in some respects specifically'described the construction andrelative arrangement of the parts comprised in my improvements, in orderto impart a full and exact understanding of the same, but I do notdesire to be understood as confining myself to such specificconstruction and arrangement as such changes or modifications may bemade in practice as fairly fall within the scope of my invention. I alsodo not desire to be understood as confining myself to the u use of myimprovements in'the type of injector shown in the drawings, as they maybe employed in any injector to which they are applicable.

Having described my invention, what I claim is 1. A feed water injectorfor steam boilers comprising a removable end piece or bushing havingathreaded bore, and an exteriorlythreaded and removable delivery tubearranged in said bore and connected to the end or engaging'any otherpart, substantially as specified.

2. A feed water injector for steam boilers comprising a shell or casinghaving interior and exterior threads at its feed end, a removable endpiece or bushing carrying a recasing and also having a flange h adaptedto abut against the end of said casing, and the line check or pipehaving interior threads to engage the exterior threads of the casing andalso having a shoulder 19, adapted to bear against the flange of the endpiece or bushing, substantially as and for the purpose set forth.

comprising a casing, a removable combining tube, and a removable endpiece detachably connected directly to the combining tube, whereby theend piece and combining tube may be together removed from the casing andthen disconnected, substantially as specified.

4. A feed water injector for steam boilers comprising a casing, aremovable combining tube arranged in said casing, a removable end pieceor bushing detachably connected directly to the combining tube, and adelivery tube carried by and detachably connected to the end piece orbushing, whereby the combining tube, the end piece or bushing, and thedelivery tube may be together removed from the casing and the combiningtube and delivery tube then disconnected from the end piece or bushing,substantially as specified.

- 5. A feed water injector for steam boilers comprising a casing, aremovable combining tube arranged in said casing and having the extendedand interiorly threaded cylindrical ing detachably connected to thecasing and having exterior threads to engage the threads of the portion0, and also having an interior threaded bore, and an exteriorly threadeddelivery tube arrangedin the bore of the end piece or bushing,substantially as specified.

for steam boilers comprising a shell or casing having interior threadsat its feed end, the

interiorly threaded cylindrical portion 0, the end piece or bushing D,having exterior threads to engage the threads of the casing and tubeportion C, and also having the angular portion 9, and flange h, and theinterior threaded bore, and the exteriorly threaded delivery tubeadapted to take into'said' bore piece or bushing alone and not connectedto 3. A feed water injector for steam boilers.

movable delivery tube and having exterior threads to engage the interiorthreads of the.

portion 0, the removable end piece or bush- 6. The herein described feedwater injector removable combining tube arranged in the shell or casingand having the extended and and having an angular heador shoulder, subjstantially as and for the purpose setforth.

7. A feed water injector for steam boilers to engage the portion 0,substantially as comprising a casing, a removable combining specified.:0 tube arranged in said casing and having the In testimony whereofIaffixmysignature in extended and interiorly threaded cylindricalpresence of two witnesses.

5 portion 0, and the removable end piece or PARKER PILLSBURY HOGUE.

bushing detachably connected to the casing Witnesses: and havingexterior threads to engage the W. J. DAVIDSON,

threads of the casing and also exterior threads 7 GEORGE ROST.

